Neutrophilia after Carprofen (Rimadyl) in dogs

984 reports to the FDA describe neutrophilia in dogs given Carprofen. That is 2.1% of all reports for this medicine, compared with 0.6% across reports for all dog medicines, so it is reported unusually often with this medicine.

984Reports
41%Marked serious
6.8%Recovered
40%Died or euthanised
7 daysTypical onset
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How soon it started

Same day
53 12%
1–2 days
84 18%
3–7 days
104 23%
1–4 weeks
110 24%
Over a month
107 23%

How the animals did

Recovered
58 5.9%
Recovered with lasting effects
9 0.9%
Still unwell when reported
223 23%
Died
261 27%
Euthanised
134 14%
Not known
299 30%

Problems reported at the same time

Age of the animals

Under 1 year
41
1–3 years
114
4–7 years
262
8–11 years
357
12+ years
200

About this medicine

Carprofen relieves pain and inflammation from arthritis or after surgery.

Products with this ingredient include Rimadyl, Novox, Vetprofen. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

NSAIDs can affect the stomach, liver and kidneys. Vets usually recommend blood tests before and during long-term use.

Questions owners ask

Can Carprofen cause neutrophilia in dogs?
984 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
How soon after a dose was it reported?
In half of the reports with dates, it started within 7 days of the first dose.
What should I do?
Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Neutrophilia with similar medicines

All reported side effects of Carprofen in dogs · Medicines most reported with neutrophilia